Sex and finances are better for married people. Don't worry, singles — you win sleep

By Amy Roberts, CNNDesign: India Hayes and Galit Deshe, CNN

Updated 0959 GMT (1759 HKT) February 14, 2018

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(CNN)Each year when Valentine's Day approaches, our thoughts turn to love, relationships and coupling.

As some anticipate the holiday that others dread, the spotlight is split between two groups: Those in relationships, and those who're not. While there are certainly perks to both lifestyles, when is it better to be coupled up, and when is it better to be living the single life?

TEAM SINGLE: On the other side, we have the unattached, those 18 and over who have never been married, as well as divorcees, widows, widowers and those who're separated. There were 115.8 million single Americans in 2016, which is about 47.3% of the adult population. Forty-nine percent were women, and 45.5% were men.

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Note: Obviously plenty of people in long term relationships and civil unions get a little bit of both the married and single world, legally and personally speaking.

Finances

When you have a significant other, you have a significant financial advantage: You can pool your financial resources and share the bills. If you both work, and make about the same amount, it can seem like you're getting a 100% raise. One often-cited 2005 study from Ohio State University found married people "experience a per person net worth increase of 77% over singles. Additionally, their combined wealth increases on average by 16% for each year of marriage." Another plus, if one partner loses his or her job, the other's income provides a safety net.

What about taxes?

Married couples don't automatically benefit when it's tax time. Depending on income, some are eligible for bonuses and certain deductions where singles aren't, but in certain situations, they are responsible for paying a tax penalty that could eat up a large portion of their combined salaries. For Social Security, one partner can claim a full spousal benefit, which is equal to one half of your husband or wife's retirement benefit.

What about spending?

In their 2013 article for The Atlantic, "The High Price of Being Single in America," Lisa Arnold and Christina Campbell experimented with hypothetical single and married people's finances and discovered the marrieds came out on top over their unmarried counterparts in several key areas.

If you're single, there may be a bit less spending money, but how to spend it is your choice alone. No one can deny your dream of weekly mani-pedis or slam the door on your meticulously decorated fan cave.

Verdict: TEAM MARRIED

Singletons may enjoy more personal freedom with their finances, but if we're talking hard numbers, being married is usually an advantage.

They have a lower risk for heart problems as well, says a 2014 study from the American College of Cardiology. Researchers there screened 3.5 million adults for cardiovascular problems and found that those who were married had less heart disease and healthier blood vessels throughout the body than people who were single, divorced or widowed.

What about insurance?

Couples and families sharing a plan are sometimes able to pay toward the same annual deductible, which would make benefits coverage kick in faster, saving money.

What about health and happiness?

The takeaway from these advantages relies on whether the couples had happy marriages. Stress and depression resulting from unhappy partnerships can adversely affect health, an issue singles don't have to face. Researchers from the University of Utah found in 2009 that middle-aged women in unhappy marriages showed risk factors for heart attacks and diabetes.

If you're single, you may be more motivated to get in shape to look attractive for potential mates.